CN2580424Y - LCD digital thermometer powered by using rechargeable cell and solar cell - Google Patents
LCD digital thermometer powered by using rechargeable cell and solar cell Download PDFInfo
- Publication number
- CN2580424Y CN2580424Y CN02284293U CN02284293U CN2580424Y CN 2580424 Y CN2580424 Y CN 2580424Y CN 02284293 U CN02284293 U CN 02284293U CN 02284293 U CN02284293 U CN 02284293U CN 2580424 Y CN2580424 Y CN 2580424Y
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- solar cell
- terminal
- circuit
- terminal voltage
- rechargeable battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an LCD digital thermometer powered by using a rechargeable cell and a solar cell. The utility model comprises a temperature sensor III connected with the input terminal of an I/O port of a single chip computer I, an LCD display IV connected with the output terminal of the I/O port of the single chip computer I, and a power circuit II connected the VDD terminal and the VSS terminal of the single chip computer I. The utility model is characterized in that the power circuit II comprises a power supply which is connected in parallel and composed of a rechargeable cell BAT and a solar cell SP, and a three-terminal voltage stabilizing circuit IC connected between the positive electrode and the negative electrode of the power supply. The negative electrode of the power supply is connected with the VSS terminal of the single chip computer, and the positive electrode is connected with the IN terminal of the three-terminal voltage stabilizing circuit IC. In addition, the GND terminal of the three-terminal voltage stabilizing circuit IC is connected with the negative electrode of the power supply, and the OUT terminal of the three-terminal voltage stabilizing circuit IC is connected with the VDD terminal of the single chip computer.
Description
(1) technical field
The utility model relates to a kind of thermometer, relates to a kind of LCD digital display thermometer that adopts rechargeable battery and solar cell for supplying power specifically.
(2) background technology
The LCD digital display thermometer of prior art all adopts traditional powered battery, in use, along with the consumption (life-span of general small-capacity cells is about 1 year) of the energy content of battery, the reduction gradually of output voltage, also deepening gradually of the brightness of LCD (LCD), and the circuit reliability of operation is reduced, cause the increase of thermometric error.When voltage is lower than a certain numerical value, thermometer will lose the function of operate as normal.
(3) summary of the invention
The purpose of this utility model provide with regard to being to overcome above-mentioned weak point of the prior art a kind of utilize rechargeable battery and solar cell as complementary power supply and can be for a long time, the employing rechargeable battery of continuous working reliably and the LCD digital display thermometer of solar cell for supplying power.
The purpose of this utility model can adopt following measure to realize:
The LCD digital display thermometer of employing rechargeable battery of the present utility model and solar cell for supplying power comprises the temperature sensor that is connected with the I/O mouth input end of single-chip microcomputer and is connected the LCD display of the I/O mouth output terminal of single-chip microcomputer, and the power circuit that is connected with VDD, the VSS of single-chip microcomputer end, wherein said power circuit comprise the power supply of forming by rechargeable battery BAT and solar cell SP that is connected with parallel way and be connected positive source and negative pole between the three-terminal voltage-stabilizing IC circuit; Described power cathode is connected the VSS end of single-chip microcomputer, and positive pole is connected the IN end of three-terminal voltage-stabilizing IC circuit, and the GND end of three-terminal voltage-stabilizing IC circuit links together with power cathode, and its OUT end is connected the vdd terminal of single-chip microcomputer.
The utility model is connected with switch S between the common port of the IN of three-terminal voltage-stabilizing IC circuit end and solar cell and rechargeable battery.Its objective is: after the Displaying Meter assembly is manufactured to finished product and deposits the warehouse through being up to the standards, and product is in transportation, or with the supporting back of miscellaneous equipment long storage time in the warehouse time spent not, also can cause the equipment power consumption, after adding switch S, can save the electric energy of depositing among the BAT, and constantly charge to BAT by SP, keep the higher terminal voltage state of BAT, only need open switch S when working once more can come into operation.
The solar cell that is adopted in the utility model is a non-crystal silicon solar cell, also can adopt the solar cell of other known technology as power supply certainly; The model of described three-terminal voltage-stabilizing IC circuit is S-81215.
The rechargeable battery that adopts can be a nickel-cadmium chargeable battery in the utility model, also can be the rechargeable Ni-H 2 battery, can also be lithium battery etc.
Principle of work of the present utility model and advantage are as follows:
The utility model provides the energy as complementary power supply for thermometer by rechargeable battery and solar cell, and single-chip microcomputer is accepted the signal that the temperature sensor collection comes by the I/O mouth, after computing, analysis, processing, outputs to LCD by the I/O mouth, demonstrates temperature.
Three-terminal voltage-stabilizing IC circuit in the utility model can be exported the dc voltage stability of 1.5V～2.6V at 1.5V.The output voltage of rechargeable battery is between 2～2.4V, and output 1.5V burning voltage is powered to single-chip microcomputer after its process three-terminal voltage-stabilizing IC circuit.When illumination is arranged (during＞80Lx), solar panel SP accepts illumination and produces electric energy, and when the voltage of solar cell SP was higher than the voltage of rechargeable battery BAT, to BAT trickle charge, charging current changed and changes along with illuminance.Utilize the lower internal resistance of the relative solar cell SP of rechargeable battery BAT here, played pressure stabilization function.Daytime every day, evening, BAT discharged to rechargeable battery BAT charging.Go round and begin again, can keep the terminal voltage of BAT to be not less than 2.3V.When illuminance 200Lx, charging current can reach 30～50 μ A, this illuminance is driven a daylight lamp and can be reached fully in general room, even if some months even loseed light in a year, the terminal voltage of BAT also can remain on about 2.2V, again seeing behind the light (between about 100～500Lx) can be so that BAT returns to 2.3V in 10～15 days, can return to 2.35～2.4V in 20 days.Because BAT is in the little current discharge of trickle charge (≤5 μ A) state the life-span of BAT was extended to more than 5 years.
(4) description of drawings
Fig. 1 is a shape assumption diagram of the present utility model.
1 is LCD display among the figure, the 2nd, and solar cell, the 3rd, housing, the 4th, temperature sensor.
Fig. 2 is a theory diagram of the present utility model.
Fig. 3 is the circuit theory diagrams of first kind of embodiment of the utility model.
Fig. 4 is the circuit theory diagrams of second kind of embodiment of the utility model.
(5) embodiment
The utility model is done with detailed description below with reference to embodiment (accompanying drawing):
Embodiment 1:
Shown in Fig. 2,3, present embodiment comprises and is connected temperature sensor III with the I/O mouth input end of single-chip microcomputer I and is connected the LCD display IV of the I/O mouth output terminal of single-chip microcomputer I, and the power circuit II that is connected with VDD, the VSS of single-chip microcomputer I end, wherein said power circuit II comprise the power supply of forming by rechargeable battery BAT and solar cell SP that is connected with parallel way and be connected positive source and negative pole between the three-terminal voltage-stabilizing IC circuit; Described power cathode is connected the VSS end of single-chip microcomputer, and positive pole is connected the IN end of three-terminal voltage-stabilizing IC circuit, and the GND end of three-terminal voltage-stabilizing IC circuit links together with power cathode, and its OUT end is connected the vdd terminal of single-chip microcomputer.The solar cell that is adopted in the utility model is a non-crystal silicon solar cell; The model of described three-terminal voltage-stabilizing IC circuit is S-81215; The model of single-chip microcomputer is AX1002; Temperature sensor RT inserts the THER end and the CAP end of single-chip microcomputer.
Embodiment 2:
As shown in Figure 4: the present embodiment general structure is identical with embodiment 1, and difference is to be connected with switch S between the common port of the IN of three-terminal voltage-stabilizing IC circuit end and solar cell and rechargeable battery.Its objective is: after the Displaying Meter assembly is manufactured to finished product and deposits the warehouse through being up to the standards, and product is in transportation, or with the supporting back of miscellaneous equipment long storage time in the warehouse time spent not, also can cause the equipment power consumption, after adding switch S, can save the electric energy of depositing among the BAT, and constantly charge to BAT by SP, keep the higher terminal voltage state of BAT, only need open switch S when working once more can come into operation.
Claims (4)
1, a kind of LCD digital display thermometer that adopts rechargeable battery and solar cell for supplying power, it comprises the temperature sensor III that is connected with the I/O mouth input end of single-chip microcomputer I and is connected the LCD display IV of the I/O mouth output terminal of single-chip microcomputer I, and the power circuit II that is connected with VDD, the VSS of single-chip microcomputer I end, it is characterized in that: described power circuit II comprise the power supply of forming by rechargeable battery BAT and solar cell SP that is connected with parallel way and be connected positive source and negative pole between the three-terminal voltage-stabilizing IC circuit; Described power cathode is connected the VSS end of single-chip microcomputer, and positive pole is connected the IN end of three-terminal voltage-stabilizing IC circuit, and the GND end of three-terminal voltage-stabilizing IC circuit links together with power cathode, and its OUT end is connected the vdd terminal of single-chip microcomputer.
2, the LCD digital display thermometer of employing rechargeable battery according to claim 1 and solar cell for supplying power is characterized in that: be connected with switch S between the common port of the IN of three-terminal voltage-stabilizing IC circuit end and solar cell and rechargeable battery.
3, the LCD digital display thermometer of employing rechargeable battery according to claim 1 and solar cell for supplying power is characterized in that: described solar cell is a non-crystal silicon solar cell.
4, the LCD digital display thermometer of employing rechargeable battery according to claim 1 and 2 and solar cell for supplying power is characterized in that: the model of described three-terminal voltage-stabilizing IC circuit is S-81215.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284293U CN2580424Y (en) | 2002-11-20 | 2002-11-20 | LCD digital thermometer powered by using rechargeable cell and solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02284293U CN2580424Y (en) | 2002-11-20 | 2002-11-20 | LCD digital thermometer powered by using rechargeable cell and solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2580424Y true CN2580424Y (en) | 2003-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02284293U Expired - Fee Related CN2580424Y (en) | 2002-11-20 | 2002-11-20 | LCD digital thermometer powered by using rechargeable cell and solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2580424Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393447A (en) * | 2011-11-14 | 2012-03-28 | 河南汉威电子股份有限公司 | Solar energy gas detector |
-
2002
- 2002-11-20 CN CN02284293U patent/CN2580424Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393447A (en) * | 2011-11-14 | 2012-03-28 | 河南汉威电子股份有限公司 | Solar energy gas detector |
| CN102393447B (en) * | 2011-11-14 | 2014-07-02 | 河南汉威电子股份有限公司 | Solar energy gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHUNCHANG INSTRUMENTS + METERS CO., LTD., ZHENGZHO Free format text: FORMER OWNER: HUALING INSTRUMENT + METER CO., LTD., ZHENGZHOU Effective date: 20111026 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 450002 ZHENGZHOU, HENAN PROVINCE TO: 450000 ZHENGZHOU, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111026 Address after: 450000 Zhengzhou economic and Technological Development Zone, Henan, the main street, building eighth, No. 2218 Patentee after: Howe Precision Industrial Inc. Address before: 450002, Henan province Zhengzhou City Jinshui District temple Li Village (Institute of Light Industry Institute) Patentee before: Hualing Instrument and Gauge Co., Ltd., Zhengzhou |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031015 Termination date: 20111120 |